CN205225175U - Float collar device - Google Patents
Float collar device Download PDFInfo
- Publication number
- CN205225175U CN205225175U CN201520934109.2U CN201520934109U CN205225175U CN 205225175 U CN205225175 U CN 205225175U CN 201520934109 U CN201520934109 U CN 201520934109U CN 205225175 U CN205225175 U CN 205225175U
- Authority
- CN
- China
- Prior art keywords
- spool
- valve rod
- housing
- valve seat
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 239000012530 fluid Substances 0.000 claims description 22
- 239000004568 cement Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model relates to a float collar device, its purpose is in order to provide a long service life, high leakproofness float collar device. The utility model discloses float collar device includes casing (13), disk seat (7), case (3), valve rod (10), spring (11) and spring holder (12), disk seat and spring holder are all fixed in the casing, it has the through-hole to open on the disk seat, be equipped with the inner conical surface in the through-hole, the upper end of valve rod is fixed in the case below, the lower extreme is located the centre bore of spring holder, the spring suit is on the valve rod, the upper and lower end of casing is equipped with interior external screw thread respectively, the case is the frustum structure, from the top down is equipped with flexible sealing cylinder (5) in proper order on the valve rod of case below, right board (8), fixed block (9) and spring, the fixed block is fixed on the valve rod, the spring is located between fixed block and the spring holder.
Description
Technical field
The utility model relates to the cementing unit of straight well, extended reach well and horizontal well in a kind of oil-gas field development, particularly relates to a kind of float collar device.
Background technology
Float collar device is the device preventing cement paste from pouring in down a chimney that in oil-gas field development, well cementation field is commonly used, and the quality of float collar sealing performance plays key effect to whole cementing quality.The Chinese utility model patent application " spring ball float collar " (application publication number CN203961894U) that on November 26th, 2014 announces, wherein said float collar device is made up of housing, valve seat, valve ball, valve rod, position-arresting disk and spring, relies on spring to make valve ball reset thus realize sealing with valve seat during work.Such float collar mainly has the following disadvantages: one be the sealing of such float collar is rigid seal, there will be poorly sealed phenomenon under cement paste washes away for a long time.Two is that after such float collar works long hours, valve rod easily produces crooked, finally causes valve ball and valve seat not to seal by accurate contraposition.Three is that spring fatiguability after working long hours damages, and elasticity weakens can not make valve ball reset, and finally causes seal failure.
Utility model content
The technical problems to be solved in the utility model is to provide the float collar device of a kind of long service life, high leakproofness.
The utility model float collar device, comprise housing, valve seat, spool, valve rod, spring and spring base, described valve seat and spring base are all fixed in housing, valve seat has through hole, inner conical surface is provided with in through hole, the upper end of described valve rod is fixed on below spool, the lower end of valve rod is positioned at the centre bore of spring base, described spring housing is contained on valve rod, the upper end of described housing is provided with internal thread, lower end is provided with external screw thread, described spool is frustum structure, the inner conical surface of its male cone (strobilus masculinus) and through hole matches, valve rod below described spool is set with flexible sealing cylinder from top to bottom successively, righting board, fixed block and spring, the inwall of described flexible sealing cylinder and through hole fits tightly, flexible sealing cylinder and righting board hold out against and are fixed on below spool by described fixed block, fixed block is fixed on valve rod, spring is between fixed block and spring base, described righting board coordinates with body clearance, righting board and spring base are equipped with fluid course.
The utility model float collar device, the upper inside wall of wherein said housing is provided with ladder, and housing threaded upper ends is fixed with a top connection, and described top connection is tubular, and its inside is provided with described internal thread, and described valve seat is fixed between top connection and upper ladder.
The utility model float collar device, the inner wall lower of wherein said housing is provided with downstairs, and housing lower end screw thread is fixed with a lower contact, and described lower contact is tubular, and its outside is provided with described external screw thread, and described spring base is fixed between lower contact and downstairs.
The utility model float collar device, the upper end of wherein said spool is provided with a spool guide head, and described spool guide head is cylindric, is provided with guide cylinder above described valve seat, and described guide cylinder is communicated with the through hole on valve seat, and described spool guide head is positioned at guide cylinder.
The utility model float collar device, wherein said spool guide head and valve rod are coaxially arranged, and spool guide head, spool and valve-stem integrated are shaping.
The utility model float collar device, wherein said guide cylinder and valve seat one-body molded, three O RunddichtringOs are installed between valve seat and inner walls.
The utility model float collar device, wherein said flexible sealing cylinder is rubber tube, a sleeve is also provided with between rubber tube and righting board, described sleeve set is on valve rod, the lower surface of described rubber tube offers circumferential groove, the upper surface of described sleeve is provided with hoop flange, and described hoop flange is positioned at described circumferential groove.
The utility model float collar device, the fluid course on wherein said righting board is located between righting board and housing, the fluid course on righting board uniform four along the edge of righting board.
The utility model float collar device, the fluid course on wherein said spring base uniform three along the edge of spring base.
The utility model float collar device, wherein said fixed block screw thread is fixed on valve rod.
Through hole in valve seat in the utility model float collar device arranges inner conical surface, spool is set to frustum structure, frustum structure and inner conical surface match and realize rigid seal, flexible sealing cylinder is also provided with below spool, flexible sealing cylinder and valve seat through-hole realize flexible sealing, valve rod is set with righting board, righting board and housing are matched in clearance, therefore righting board can slidably reciprocate along enclosure interior, the setting of righting board can make valve rod not swing moving up and down in process, thus spool and valve seat accurate contraposition are sealed, the sealing means that spool combines with the flexible sealing of valve seat with rigid seal and the flexible sealing cylinder of valve seat is adopted in the utility model, the high leakproofness of spool and valve seat can be realized.The utility model has abandoned valve ball of the prior art, but employing spool, move up and down in process at valve rod, spool is static relative to valve rod, and valve ball rolls in housing, therefore relative to spool, the damage that valve ball brings spring is larger, so the utility model float collar device longer service life.
Spool guide head in the utility model float collar device can move up and down along guide cylinder, strengthens the aligning accuracy between spool and valve seat further.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model float collar device embodiment one;
Fig. 2 is the sectional view along A-A line in Fig. 1;
Fig. 3 is the sectional view along B-B line in Fig. 1;
Fig. 4 is the working state figure of the utility model float collar device embodiment one;
Fig. 5 is the front view of the utility model float collar device embodiment two.
Detailed description of the invention
Embodiment one
As shown in Figure 1, and shown in composition graphs 2,3, the utility model float collar device comprises housing 13, valve seat 7, spool 3, valve rod 10, spring 11 and spring base 12, described housing 13 is tubular, described valve seat 7 and spring base 12 are all fixed in housing 13, spool 3, valve rod 10 and spring 11 are also all arranged in housing 13, and described spring 11 is sleeved on valve rod 10.Valve seat 7 has through hole, is provided with grinding inner conical surface in through hole, the upper end of described valve rod 10 is fixed on below spool 3, and the lower end of valve rod 10 is positioned at the centre bore of spring base 12, and valve rod 10 can centrally slide up and down in hole.
The upper end of described housing 13 is provided with internal thread, and lower end is provided with external screw thread.The upper end of housing 13 set female concrete mode as: housing 13 threaded upper ends is fixed with a top connection 2, described top connection 2 is in tubular, its inside is provided with described internal thread, the object arranging internal thread is to be connected with the sleeve pipe (not shown) above float collar device, and sleeve pipe is used for carrying cement paste.The lower end of housing 13 is provided with externally threaded concrete mode and is: housing 13 lower end screw thread is fixed with a lower contact 14, described lower contact 14 is in tubular, its outside is provided with described external screw thread, arranging externally threaded object is to be connected with the sleeve pipe (not shown) below float collar device, and sleeve pipe is used for carrying cement paste.
Described spool 3 is frustum structure, and the inner conical surface of its male cone (strobilus masculinus) and through hole matches, and when the male cone (strobilus masculinus) of spool 3 and the inner conical surface of through hole are adjacent to, spool 3 and valve seat 7 realize rigid seal.Valve rod 10 below described spool 3 is set with flexible sealing cylinder 5, righting board 8, fixed block 9 and spring 11 from top to bottom successively.Described flexible sealing cylinder 5 fits tightly with the inwall of through hole, can realize the flexible sealing of spool 3 and valve seat 7.
Flexible sealing cylinder 5 and righting board 8 hold out against and are fixed on below spool 3 by described fixed block 9, and fixed block 9 is fixed on valve rod 10.Fixed block 9 is a nut, and its screw thread is fixed on valve rod 10.
Spring 11 is between nut and spring base 12, and spring 11 arranges a pretightning force when installing, and like this when not working, spring 11 can upwardly valve rod 10, until spool 3 and valve seat 7 are adjacent to mutually.
Described righting board 8 and housing 13 matched in clearance, righting board 8 and spring base 12 are equipped with fluid course, and righting board 8 axially can move freely along housing 13 internal face.Fluid course on wherein said righting board 8 is located between righting board 8 and housing 13, the fluid course on righting board 8 uniform four along the edge of righting board 8.Fluid course on described spring base 12 uniform three along the edge of spring base 12.
The upper inside wall of housing 13 is provided with ladder, and described valve seat 7 is fixed between top connection 2 and upper ladder.When valve seat 7 is installed, first put in housing 13 from the upper port of housing 13 by valve seat 7, until the lower end of valve seat 7 contacts with upper ladder, upper ladder is played a supporting role to valve seat 7, again top connection 2 is rotated afterwards and be screwed in housing 13, until top connection 2 and valve seat 7 hold out against.Like this, valve seat 7 is just fixed between top connection 2 and upper ladder.
The inner wall lower of housing 13 is provided with downstairs, and described spring base 12 is fixed between lower contact 14 and downstairs.Spring base 12 is a circular slab, and it is when being installed on housing 13, first the lower port of spring base 12 from housing 13 is put into, until it contacts with downstairs, lower contact 14 is rotated afterwards again and is screwed in housing 13, until lower contact 14 and spring base 12 hold out against.Like this, spring base 12 is just fixed between lower contact 14 and downstairs.
The upper end of spool 3 is provided with a spool guide head 1, and described spool guide head 1 is cylindric, is provided with guide cylinder above described valve seat 7, guide cylinder and valve seat 7 one-body molded.Described guide cylinder is communicated with the through hole on valve seat 7, and described spool guide head 1 is positioned at guide cylinder.Guide cylinder is positioned at the lower port of top connection 2, and when valve rod 10 moves up and down, spool guide head 1 can move up and down along guide cylinder, to realize the accurate contraposition of spool 3 and valve seat 7.
Spool guide head 1 and valve rod 10 are coaxially arranged, and spool guide head 1, spool 3 and valve rod 10 are one-body molded.
Seal Design between valve seat 7 and housing 13, is namely provided with three O RunddichtringOs between valve seat 7 and housing 13 inwall, and three O RunddichtringOs are placed in the three seals groove in the middle part of valve seat 7 external surface.
Flexible sealing cylinder 5 is rubber tube, is also provided with a sleeve 6 between rubber tube and righting board 8, and described sleeve 6 is sleeved on valve rod 10, and sleeve 6 top withstands on rubber tube, and bottom withstands on righting board 8.The lower surface of described rubber tube offers circumferential groove, and the upper surface of described sleeve 6 is provided with hoop flange, and described hoop flange is positioned at described circumferential groove.
Through hole in valve seat 7 in the utility model float collar device arranges inner conical surface, spool 3 is set to frustum structure, frustum structure and inner conical surface match and realize rigid seal, flexible sealing cylinder 5 is also provided with below spool 3, flexible sealing cylinder 5 and valve seat 7 through hole realize flexible sealing, valve rod 10 is set with righting board 8, righting board 8 and housing 13 are matched in clearance, therefore righting board 8 can slidably reciprocate along housing 13 inside, the setting of righting board 8 can make valve rod 10 not swing moving up and down in process, thus spool 3 and valve seat 7 accurate contraposition are sealed, the sealing means that rigid seal combines with flexible sealing is adopted in the utility model, the high leakproofness of spool 3 and valve seat 7 can be realized.The utility model has abandoned valve ball of the prior art, but adopt spool 3, move up and down in process at valve rod 10, valve rod 10 is static relatively for spool 3, and valve ball rolls in housing, therefore relative to spool 3, the damage that valve ball brings spring is larger, so the utility model float collar device longer service life.
Spool guide head 1 in the utility model float collar device can move up and down along guide cylinder, strengthens the aligning accuracy between spool 3 and valve seat 7 further.
The course of work of the present utility model:
As shown in Figure 4, in cementing well operation process, the utility model is connected in lower going-into-well with sleeve pipe by the internal thread of top connection 2.Pressure acts on spool guide head 1 and spool 3 by the cavity in the middle of top connection 2 and valve seat 7 by cement paste, pressure passes to spring 11 by rubber tube, sleeve 6, righting board 8 successively, when cement paste pressure reaches certain value, spring 11 compression makes valve rod 10 move down, the sealing surface that spool 3, rubber tube and valve seat 7 are formed is separated and forms fluid course, and cement paste completes well cementing operation by the fluid course on righting board, the fluid course on spring base.After having cemented the well, valve rod 10 is in the effect spring-go position next time of spring 11, and the male cone (strobilus masculinus) of spool 3 and valve seat 7 inner conical surface form rigidity conical surface seal, and rubber tube and valve seat 7 form flexible sealing, prevent cement paste return.
The utility model float collar device, is designed to conical seal (contact) face by rigid seal face, increases sealing area, too increases rubber tube as flexible seal device simultaneously, and the two combination considerably increases sealing effectiveness.The design of righting board 8 and spool guide head 1 makes spool 3 and valve seat 7 aim the place smoothly, realizes quick and precisely sealing.In long-time well cementing operation by mud, after cement paste, still can accurate return, good seal, without the return phenomenon generation of mud, thus guarantee cementing quality.The utility model not only may be used for horizontal well and high angle hole, also can be used for straight well.
Embodiment two
The present embodiment is relative to the difference of embodiment one: do not arrange spool guide head and sleeve.
As shown in Figure 5, the utility model float collar device comprises housing 13, valve seat 7, spool 3, valve rod 10, spring 11 and spring base 12, described housing 13 is tubular, described valve seat 7 and spring base 12 are all fixed in housing 13, spool 3, valve rod 10 and spring 11 are also all arranged in housing 13, and described spring 11 is sleeved on valve rod 10.Valve seat 7 has through hole, is provided with grinding inner conical surface in through hole, the upper end of described valve rod 10 is fixed on below spool 3, spool 3 and valve rod 10 one-body molded.The lower end of valve rod 10 is positioned at the centre bore of spring base 12, and valve rod 10 can centrally slide up and down in hole.
The upper end of described housing 13 is provided with internal thread, and lower end is provided with external screw thread.The upper end of housing 13 set female concrete mode as: housing 13 threaded upper ends is fixed with a top connection 2, described top connection 2 is in tubular, its inside is provided with described internal thread, the object arranging internal thread is to be connected with the sleeve pipe (not shown) above float collar device, and sleeve pipe is used for carrying cement paste.The lower end of housing 13 is provided with externally threaded concrete mode and is: housing 13 lower end screw thread is fixed with a lower contact 14, described lower contact 14 is in tubular, its outside is provided with described external screw thread, arranging externally threaded object is to be connected with the sleeve pipe (not shown) below float collar device, and sleeve pipe is used for carrying cement paste.
Described spool 3 is frustum structure, and the inner conical surface of its male cone (strobilus masculinus) and through hole matches, and when the male cone (strobilus masculinus) of spool 3 and the inner conical surface of through hole are adjacent to, spool 3 and valve seat 7 realize rigid seal.Valve rod 10 below described spool 3 is set with flexible sealing cylinder 5, righting board 8, fixed block 9 and spring 11 from top to bottom successively.Described flexible sealing cylinder 5 fits tightly with the inwall of through hole, and can realize the flexible sealing of spool 3 and valve seat 7, flexible sealing cylinder 5 is rubber tube.
Flexible sealing cylinder 5 and righting board 8 hold out against and are fixed on below spool 3 by described fixed block 9, and fixed block 9 is fixed on valve rod 10.Fixed block 9 is a nut, and its screw thread is fixed on valve rod 10.
Spring 11 is between nut and spring base 12, and spring 11 arranges a pretightning force when installing, and like this when not working, spring 11 can upwardly valve rod 10, until spool 3 and valve seat 7 are adjacent to mutually.
Described righting board 8 and housing 13 matched in clearance, righting board 8 and spring base 12 are equipped with fluid course, and righting board 8 axially can move freely along housing 13 internal face.Fluid course on wherein said righting board 8 is located between righting board 8 and housing 13, the fluid course on righting board 8 uniform four along the edge of righting board 8.Fluid course on described spring base 12 uniform three along the edge of spring base 12.
The upper inside wall of housing 13 is provided with ladder, and described valve seat 7 is fixed between top connection 2 and upper ladder.When valve seat 7 is installed, first put in housing 13 from the upper port of housing 13 by valve seat 7, until the lower end of valve seat 7 contacts with upper ladder, upper ladder is played a supporting role to valve seat 7, again top connection 2 is rotated afterwards and be screwed in housing 13, until top connection 2 and valve seat 7 hold out against.Like this, valve seat 7 is just fixed between top connection 2 and upper ladder.
The inner wall lower of housing 13 is provided with downstairs, and described spring base 12 is fixed between lower contact 14 and downstairs.Spring base 12 is a circular slab, and it is when being installed on housing 13, first the lower port of spring base 12 from housing 13 is put into, until it contacts with downstairs, lower contact 14 is rotated afterwards again and is screwed in housing 13, until lower contact 14 and spring base 12 hold out against.Like this, spring base 12 is just fixed between lower contact 14 and downstairs.
Seal Design between valve seat 7 and housing 13, is namely provided with three O RunddichtringOs between valve seat 7 and housing 13 inwall, and three O RunddichtringOs are placed in the three seals groove in the middle part of valve seat 7 external surface.
Through hole in valve seat 7 in the utility model float collar device arranges inner conical surface, spool 3 is set to frustum structure, frustum structure and inner conical surface match and realize rigid seal, flexible sealing cylinder 5 is also provided with below spool 3, flexible sealing cylinder 5 and valve seat 7 through hole realize flexible sealing, valve rod 10 is set with righting board 8, righting board 8 and housing 13 are matched in clearance, therefore righting board 8 can slidably reciprocate along housing 13 inside, the setting of righting board 8 can make valve rod 10 not swing moving up and down in process, thus spool 3 and valve seat 7 accurate contraposition are sealed, the sealing means that rigid seal combines with flexible sealing is adopted in the utility model, the high leakproofness of spool 3 and valve seat 7 can be realized.The utility model has abandoned valve ball of the prior art, but adopt spool 3, move up and down in process at valve rod 10, valve rod 10 is static relatively for spool 3, and valve ball rolls in housing, therefore relative to spool 3, the damage that valve ball brings spring is larger, so the utility model float collar device longer service life.
The course of work of the present utility model:
As shown in Figure 4, in cementing well operation process, the utility model is connected in lower going-into-well with sleeve pipe by the internal thread of top connection 2.Pressure acts on spool 3 by the cavity in the middle of top connection 2 and valve seat 7 by cement paste, pressure passes to spring 11 by rubber tube, righting board 8 successively, when cement paste pressure reaches certain value, spring 11 compression makes valve rod 10 move down, the sealing surface that spool 3, rubber tube and valve seat 7 are formed is separated and forms fluid course, and cement paste completes well cementing operation by the fluid course on righting board, the fluid course on spring base.After having cemented the well, valve rod 10 is in the effect spring-go position next time of spring 11, and the male cone (strobilus masculinus) of spool 3 and valve seat 7 inner conical surface form rigidity conical surface seal, and rubber tube and valve seat 7 form flexible sealing, prevent cement paste return.
The utility model float collar device, is designed to conical seal (contact) face by rigid seal face, increases sealing area, too increases rubber tube as flexible seal device simultaneously, and the two combination considerably increases sealing effectiveness.The design of righting board 8 makes spool 3 and valve seat 7 aim the place smoothly, realizes quick and precisely sealing.In long-time well cementing operation by mud, after cement paste, still can accurate return, good seal, without the return phenomenon generation of mud, thus guarantee cementing quality.The utility model not only may be used for horizontal well and high angle hole, also can be used for straight well.
Above-described embodiment is only be described preferred embodiment of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (10)
1. a float collar device, comprise housing (13), valve seat (7), spool (3), valve rod (10), spring (11) and spring base (12), described valve seat and spring base are all fixed in housing, valve seat has through hole, inner conical surface is provided with in through hole, the upper end of described valve rod is fixed on below spool, the lower end of valve rod is positioned at the centre bore of spring base, described spring housing is contained on valve rod, the upper end of described housing is provided with internal thread, lower end is provided with external screw thread, it is characterized in that: described spool is frustum structure, the inner conical surface of its male cone (strobilus masculinus) and through hole matches, valve rod below described spool is set with flexible sealing cylinder (5) from top to bottom successively, righting board (8), fixed block (9) and spring, the inwall of described flexible sealing cylinder and through hole fits tightly, flexible sealing cylinder and righting board hold out against and are fixed on below spool by described fixed block, fixed block is fixed on valve rod, spring is between fixed block and spring base, described righting board coordinates with body clearance, righting board and spring base are equipped with fluid course.
2. float collar device according to claim 1, it is characterized in that: the upper inside wall of described housing (13) is provided with ladder, housing threaded upper ends is fixed with a top connection (2), described top connection is tubular, its inside is provided with described internal thread, and described valve seat (7) is fixed between top connection and upper ladder.
3. float collar device according to claim 2, it is characterized in that: the inner wall lower of described housing (13) is provided with downstairs, housing lower end screw thread is fixed with a lower contact (14), described lower contact is tubular, its outside is provided with described external screw thread, and described spring base (12) is fixed between lower contact and downstairs.
4. float collar device according to claim 3, it is characterized in that: the upper end of described spool (3) is provided with a spool guide head (1), described spool guide head is cylindric, described valve seat (7) top is provided with guide cylinder, described guide cylinder is communicated with the through hole on valve seat, and described spool guide head is positioned at guide cylinder.
5. float collar device according to claim 4, it is characterized in that: described spool guide head (1) and valve rod (10) are coaxially arranged, and spool guide head (1), spool (3) and valve rod (10) are one-body molded.
6. float collar device according to claim 5, is characterized in that: described guide cylinder and valve seat (7) one-body molded, three O RunddichtringOs are installed between valve seat and housing (13) inwall.
7. float collar device according to claim 6, it is characterized in that: described flexible sealing cylinder (5) is rubber tube, a sleeve (6) is also provided with between rubber tube and righting board (8), described sleeve set is on valve rod (10), the lower surface of described rubber tube offers circumferential groove, the upper surface of described sleeve is provided with hoop flange, and described hoop flange is positioned at described circumferential groove.
8. float collar device according to claim 7, is characterized in that: the fluid course on described righting board (8) is located between righting board and housing (13), the fluid course on righting board uniform four along the edge of righting board.
9. float collar device according to claim 8, is characterized in that: the fluid course on described spring base (12) uniform three along the edge of spring base.
10. float collar device according to claim 9, is characterized in that: described fixed block (9) screw thread is fixed on valve rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520934109.2U CN205225175U (en) | 2015-11-20 | 2015-11-20 | Float collar device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520934109.2U CN205225175U (en) | 2015-11-20 | 2015-11-20 | Float collar device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225175U true CN205225175U (en) | 2016-05-11 |
Family
ID=55900249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520934109.2U Active CN205225175U (en) | 2015-11-20 | 2015-11-20 | Float collar device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225175U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178631A (en) * | 2017-06-05 | 2017-09-19 | 青岛林川工程技术咨询有限公司 | A kind of device of self-closed prestressed pore passage |
| CN111236895A (en) * | 2020-02-24 | 2020-06-05 | 中国海洋石油集团有限公司 | Normally open type thermal recovery exhaust valve |
| CN111946295A (en) * | 2020-09-04 | 2020-11-17 | 中国石油天然气股份有限公司 | Plug seat |
| CN113216897A (en) * | 2021-05-27 | 2021-08-06 | 刘峰铄 | Float collar float shoe for well cementation construction |
| CN116498258A (en) * | 2023-06-29 | 2023-07-28 | 胜利油田渤海固井工程技术有限责任公司 | Floating collar floating shoe with backflow preventing function for well cementation construction |
-
2015
- 2015-11-20 CN CN201520934109.2U patent/CN205225175U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178631A (en) * | 2017-06-05 | 2017-09-19 | 青岛林川工程技术咨询有限公司 | A kind of device of self-closed prestressed pore passage |
| CN107178631B (en) * | 2017-06-05 | 2022-09-06 | 中交第四公路工程局有限公司 | Device for automatically sealing prestressed duct |
| CN111236895A (en) * | 2020-02-24 | 2020-06-05 | 中国海洋石油集团有限公司 | Normally open type thermal recovery exhaust valve |
| CN111946295A (en) * | 2020-09-04 | 2020-11-17 | 中国石油天然气股份有限公司 | Plug seat |
| CN113216897A (en) * | 2021-05-27 | 2021-08-06 | 刘峰铄 | Float collar float shoe for well cementation construction |
| CN113216897B (en) * | 2021-05-27 | 2022-07-08 | 大庆市天德忠石油科技有限公司 | Float collar float shoe for well cementation construction |
| CN116498258A (en) * | 2023-06-29 | 2023-07-28 | 胜利油田渤海固井工程技术有限责任公司 | Floating collar floating shoe with backflow preventing function for well cementation construction |
| CN116498258B (en) * | 2023-06-29 | 2023-08-22 | 胜利油田渤海固井工程技术有限责任公司 | Floating collar floating shoe with backflow preventing function for well cementation construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205225175U (en) | Float collar device | |
| CN202040134U (en) | Cartridge balanced valve | |
| CN109336032B (en) | Isobaric filling valve | |
| CN204628889U (en) | A kind of large discharge fast pneumatic joint | |
| CN103527138A (en) | Float collar and float shoe device special for horizontal well | |
| CN204899870U (en) | Sucker rod cleaning device | |
| CN205824275U (en) | A kind of water hammer-resistant angle valve | |
| CN203822217U (en) | Internal circulating hole concealed type reverse circulation valve | |
| CN204266972U (en) | A kind of multifunctional capping device | |
| CN208634462U (en) | A kind of spy fire tube container value | |
| CN203296136U (en) | Easily assembled, disassembled and maintained water inlet valve for flushing water tank | |
| CN205445539U (en) | Packer (CN) | |
| CN105150180A (en) | Bearing supporting type dust-proof boot for percussion drill | |
| CN207621103U (en) | A kind of buffer-type hydraulic cylinder | |
| CN205003036U (en) | Pin shear test device | |
| CN204343462U (en) | Concrete construction wall-through hole blocking component | |
| CN203655256U (en) | Anti-backflow water distributor | |
| CN220727097U (en) | Adjustable fracturing pump valve case processing end cap | |
| CN203560563U (en) | Two-way sealing ultrahigh pressure water open-close mechanism | |
| CN213954461U (en) | Anti-pollution pilot-operated overflow valve for high-pressure cleaning machine | |
| CN204266971U (en) | A kind of blowout preventer | |
| CN204177594U (en) | Pressure testing device | |
| US20230024940A1 (en) | Two-stroke pumping method and oil production device | |
| CN103527840A (en) | Bidirectional sealing ultrahigh pressure water switch mechanism | |
| CN204099718U (en) | A kind of water tap mounting assembly of convenient for maintaining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |